US1906641A - Bead ring applying machine - Google Patents

Description

y 1933- F. Isl-100K 1,906,641

BEAD RING APPLYING MACHINE Filed May 31, 1929 2 Sheets-Sheet l JNVLNTOR' I'Zohuan J J 0076 gzabf 1 TTORNEY May 2, 1933. J SHQQK 7 1,906,641

' BEAD RING APPLYING MACHINE Filed May 31, 1929 2 Sheets-Sheet 2 BY f;i 710075 A TTORNE Y applying machine incombination wth a vac- Patented May 2, 1933.

" N F CEYT rLoRrAN J."snoox,"or mon, on roaassren'on-mo nmrnn sTA'rEsRUBBER coMrANY,

or NEW'YORK, N. Y., ACORPORATION on NEW JERSEY BEAD BING- APPLYING ACHINE a licat on flledliay a1, 1929.' seri 1 No, 367,508.

This invention relates to a machine for clampingmachine.

clamping bead rings on to tire casings.

. In the manufacture of pneumatic tires the constituent elements of the tire are assembled is upon a drum so as to form an endless band.

called a pulley band." The pulley band is expanded into the shape of a tire casing by suitable means such as a vacuum box. While the pulley band is held inthe' shape of a tire into a mold. It is usual to apply bead rings,

which serve to clamp the beads of the tire casing together, to the casing after it has been inserted into the mold, the operation of ap-- plying thebeadrings to, the tire casing being carried out manually. While these steps in the art otbuildingpneumatic tires may be successfully carriedout with tires of small size, it is not readily applicable to the larger and largest sizes of-pncumatic tires inasmuch-as the force necessary to applyithe bead v ringsis too great to permit the successful use" the elastic rings 9 may contract into contact of manual laborzto perform the-operation continuously- I It is the object of this inventionto provide suitable mechanism for clamping bead rings- 80 on to a tire casing. a

Other objects andadvantages' of the present invention will appear in the following detailed description taken in connection with the accompanying drawings, in which Fig. 1 is a side elevation of my bead ring uum box which is shown partly insection.

Fig. 2 is a detailed sectional view showing a part of the assembly of Fig. 1 in a difl'erent stage of the operation of themachine.

' Fig. 3 is a viewsimilar to Fig. 1 showing the machine-at a difierentpoint in. its operation. Y

' Fig.4 is a detail view of one ofthe clamping'spiders.

Fig. 5 is a detail view of another of the clamping spiders. p

Fig. '6 is a" detail view showing the rack and pinionmechanism.

- Fig. 7 is a detail View of the reek.

Fig. is a top plan view ofthe bead ring The vacuum box 1*consists of the casing .2 having atop plate 3 hinged thereto which top plate is provided with an aperture 4 1 through which a pulley band may be inserted. A bottom wall 5 similar to the top plate 3 is provided with anaperturefi for receiving apulle'yband. ,The plate 7 provides a support upon which a pulley band may-rest when it is first inserted into the machine and serves to. properly position the pulley band with respect to the 'topplate3 and the bottom wall 5. The top plate 3 and the bottom wall '5 "are: provided with circumferentiallyextending grooves 8 inwhich'the elastic rings 9 are positioned; The grooves 8 are connected with a suitable evacuating means (not shown) whereby the fluid pressure in the grooves 8 may be reduced so as to cause the expansionv of the elasticrings 9 thus permitting the insertion of the pulley band within the vacuum box. After the pulley band is inserted within the vacuum box the grooves ,8 are opened to atmospheric pressure so that with the pulley band to form an air-tightseal therewith. The pulley. band, the top plate. 3,the-bottom wall 5, and the wall 2.form a substantially air-tight chamber with which a suitable evacuating means (not shown) is connected whereby the interior of the chamber may be exhausted, thus creating a differen-tial pressure due to the'atmospheric pressure which resultsin the expansion of the pulley'band into the shape of a tire casing. as shown at 10 in Fig. 1. As the shaping of the pulley band progresses the contact between the pulley band and'the elastic ring 9 is brokenbut an air-tight seal between the as shown in dotted lines in Fig. 1 prior to the insertion of the pulley band. The pulley band is inserted and one of the beads thereof allowed to rest upon the margin of the bead ring 11. After the expansion of the pulley band into the shape of a tire casing in the manner outlined above, a curing bag 13 is inserted into the shaped casing 10 and an upper bead ring 12 is positioned in the vacuum box and allowed to rest with its marginal portion upon the upper bead of the tire casing.

The mechanism for clamping the bead rings 11 and 12 together after they have been inserted into the vacuum box includes a pair of spiders 14 and 15. The spider 15 is provided with suitable lugs 16 projecting therefrom and provided with faces adapted to contact with the upper bead ring 12 as clearly shown in Fig. 2. The spider 15 is provided with apertures 17 through which the rods 18 extend. The rods 18 are rotatably mounted in apertures 19 in the spider 14 and held against longitudinal motion with respect to the spider 14 by suitable collars 2O fixed on to the rods. The rods 18 are provided with laterally extending lugs 21 which are adapted to engage with the lower bead ring 11 as clearly shown in Fig. 2.

The rods 18 are provided at the end distant from the lug 21 with sprockets 22 rigidly fixed thereto and about which the chain 23 entrained. By manipulation of the chain the lugs 21 may be rotated into a variety of positions, one of which is such that the lugs are inturned as shown in Fig. 3 which facilitates the insertion and removal of the clamping means into and from the vacuum box and bead rings. Preliminary to the insertion of the clamping device into the vacuum box and through the bead rings the lugs 21 are turned inwardly as shown in Fig. 3 an d after the clamping device has been moved to the position shown in Fig. 1 the chain 23 is manipulated so as to turn the lugs 21 from the position shown in dotted lines to the'position. shown in full lines in Fig. 1.

As shown in Fig.1 when the clamping device is inserted into the vacuum box and through the bead rings, the spiders 14 and 15 are juxtaposed so that the clamping lugs 16 and 21 are separated. In order to effect the separation of the spiders 14 and 15 the juxtaposition of the lugs 16 and 21 which results in the clamping of the bead rings together, a suitable toggle lever system consisting of links 24 pivotally connected to the spider 15 and a link 25 pivotally connected to the spider 14 is provided, the other ends of the link 24 and the link 25 being pivotally connect-ed, as shown in Fig. 8, to radius arms 25 which are rigidly connected to shaft 24 upon which sprockets 26 are fixed. The shaft 24 is rotatably mounted in the end of the arm 27. The rotation of the sprockets 26 is effected by the chains 29 which pass over the sprockets 26 and the sprockets 30, the sprockets 30 be ing fixed upon the shaft 31 passing through the journals carried by the bracket 28. A pinion 32 is rigidly fixed to the shaft 31 for effecting the drive of the sprockets 30. The pinion 32 is driven from the rack 33 which is slidably mounted in block 34 carried on the end of the piston rod 35 (see Fig. 6). Normally the rack 33 is locked against movement with respect to the block 34 by the cylinder 36 (see Fig. 7 operating through the openings 37 and 38 in the rack and the block respectively. A spring 39 is provided for normally holding the cylinder 36 in looking position as shown in Fig. 7. A plunger 40 is mounted for sliding movement in the rack 33 so that upon contact of the end of the plunger 40'with a tooth of the pinion 32 the plunger 40 will be thrust to the right as shown in Fig. 7 thereby moving the cylinder 36 out of locking relation with respect to the rack 33 so as to permit relative movement of the rack 33 and the block 34 for a purpose which will appear later. The rack is actuated through the piston rod 35 connected to piston 41 moving in the cylinder 42 and operated by fluid pressure through pipe connections 43 controlled by valve 44.

The arm 27 is connected by a link 45 with a cross head 46 through which the piston rod 35 slides. The lower end of the block 34 strikesthe cross head 46 in the downward motion of the piston rod 35 so as to effect the rotation of the arm 27 about the shaft 31 thereby raising the arm and clamping de vice from the position shown in Fig. 1 to that shown in Fig. 3. The journal bracket 28, which carries the arm 27 and the cylinder 42 are mounted upon a sleeve 47 which in turn is mounted for rotation about the shaft 48 and rests upon the collar 49 fixed upon the shaft 48, the shaft 48 being carried by suitable pedestal 50. The sleeve 47 is provided with a handle 51 by which the sleeve and all the mechanism carried thereby may be rotated either into or out of operative relation with respect to the vacuum box 1. The sleeve 47 is provided with extension 52 through which a screw passes to support block 53 which serve to limit the movement of the arm 27 and clamping mechanism mounted thereon as shown in Fig. 1. i

A radius link 54 extending substantially parallel to the arm 27 is pivotally connected at its ends with the frame 14 as shown at 55 and with the cylinder 42 as shown at 56 or any other suitable point on the machine. The radius link serves to prevent swaying of the clamping mechanism as it is raised and lowered.

In carrying out the method of this invention and by the operation of the bead clamping machine hereinabove described, the bead ring 11 is inserted in the vacuum box 1 folthe shape of a tire'casing as shown at 10in Fig. 1 and a curing bag 13 inserted therein. An upper bead ring 12 is laid upon the casing 10 with its marginal edge resting upon the bead of the casing. During these operations the bead clamping machine is positioned so as not to interfere. At this time the sleeve 47 is rotated by manual manipulation through the handle 51 thereby moving the clamping mechanism into the position shown in Fig. 3. The valve 44 is operated to apply fluid pressure beneath the piston 41 soas to raise it into the position shown in Fig.1. The motion of v the piston allows thecross head 46 to move upwardly thereby permitting therotation of the arm 27 from the position shown in'Fig. 3 to the position shown in Fig. 1 which results in the positioning of the clamping means in the vacuum box and throughthe upper bead ring. During these operations the lugs 21 on the rods 18 are inturned as shown in Fig. 3 and the dotted lines in Fig. 1. By manipulation of the chain 23 the lugs 21 are turned from the dotted line osition to the full line position as shown in ig. 1. At this time or before the turning of the lugs 21 to their outer position, a lower bead ring 11 may be raised manually from the position shown in dotted lines in Fig. 1 and allowed to rest upon the lugs 21.

The manual positioning of the lower bead ring 11 on the lugs 21 is necessarylwith the conventional type of vacuum box such as shown, but with the type of vacuum box disclosed in the companion application Serial No. 367,503 herein above referred to, the lower bead ring 11 is moved upwardly by the motion of the lower wall of the vacuum box so that when the clamping mechanism is positioned within the vacuum box and the lugs 21 turned outwardly, they will be beneath the inner margin of the bead ring.

The valve 44 s agalnmanlpulated so as to cause the further movement of piston 41 and I as the piston rod 35 moves further in its course theblock 34 contacts with the end of the rack 33 thereby setting it in motion. As the rack 33 moves the pin 40 is released and,

the apertures 37 and 38 being in registration, the spring 39 acts to thrust the cylinder 36 into locking position thereby locking the rack 33 and block 34 together. I

As the motion of the piston 41 continues, the pinion 32 is rotated thereby driving the sprockets 26, which effects the operation of toggle links 24 and 25, the link 24 being moved downwardly and the link 25 upwardly, which results in a downward motionof the spider 15 'and the upward motion of the spider 14.

The motions of the spiders 14 and 15 bring the lugs 16 and 21 together in such a mannerv as to clamp the bead rings therebetween, as

gent is:

shown in Fig. 2. The motion'of the toggle levers continues until the link 24 has reached its lowermost position and the link 25 the uppermost position, at which points the tog-' -gle action reaches its, fullest efi'ect andresults inthe application of a maximum force upon applied thereover to maintain them in clamped relation.

After the clamplng time bead ring has I the bead rings. \Vhen-the'bead ringshave been clamped together, suitable'clips 57 are beeneffectedthe'valve 44 is manipulated to pass fluid pressure into the top of the cylinder I 42 therebymoving the piston downwardly,

which motion causes the separation of the lugs 16,-and 21 and brings the spiders 14 and 15 into contact. Inasmuch as further motion of the piston 31'would be opposed or preyen ted by the contact of the spiders 14 and 15,

t s necessary thatthe piston rod continue its motion withoutacting upon the toggle system; It is for this purpose that the cylin der lock 36 is provided, and when the spiders have come into contact, the pinion '32 acts upon the plunger '40 so as to move thecylin- 'der 36 into unlocking position so that the piston 35 and the block 34 may continue their movement without moving the toggle lever systems The continued motion of the piston rod 35 brings the block 34 into contact with 5 the cross head 46 thereby rotating the arm27 I from the position shown in Fig. 1 to that shownin Fig. The clampingmechanism ice The top'plate 3 is rotated about its hinge so as to open the vacuum'boxand the casing and curing bag with thebead rings thereon removed from the vacuum box. The cycle of.

operationsv may then be repeated.

manymodifications may be made therein all I While one embodiment of my invention'has been specifically disclosed, it is'intended only as an example of my invention inasmuch as within the spirit and scopeof myinvention,

as willbe obvious to one skilled in the art.

For an understanding of the scope o f-my invention, reference is made to the following claims. w

. Having thus described my invention, what I claim anddesire to protect by Letters Pat- 1. The combination of a vacuum box adapted to expand pulley bands into tire oasings, a clamping device,.'amovable support upon which the clamping device is mounted, and pneumatic means for operating the support so as to effect the insertion and the retraction of the clamping device into and out of operative relation with respect to a tire casing held in shape in the vacuum box, and for operating the clamping device so as to apply bead rings to the tire casing while the tire casing is held in shape by the vacuum box.

2. A device for applying bead rings to tire casings comprising in combination, frames carrying lugs adapted to contact with the bead rings, said frames being slidably mounted on one another so that the lugs may be juxtaposed or separated by movement of the frames, a toggle lever system for moving said frames, and power means for operating a lever system.

3. In a bead ring applying machine in combination, clamping means for clamping bead rings on to tire casings, said clamping means being insertable into and removable from a pulley band shaping device, supporting means for carrying the clamping means, said supporting means being movable to effect the insertion and removal of the clamping means into and from the shaping device, and means for successively operating the clamping means and the supporting means.

- 4. In a bead ring applying machine in combination, a pair of frames provided with bead rlng engaging members and being relatively movable to clamp bead rings together, a toggle lever system for manipulating said frames, a movable support for said frames and toggle lever system, said support being movableto position the frames into andout of operative relation with head rings and a tire casing, and means for effecting the successive operation of the movable support and the toggle lever system. p

5. A portable bead ring applying device comprising in combination members provided with faces adapted to contact with head rings, said members being mounted for relative movement so as to effect a clamping action on bead rings, and common means for transporting said members and effecting their relative movement.

6. In a bead ring applying machine, a

clamping mechanism comprising a portable member having bead ring engaglng lugs thereon, a portable frame mounted for movement relative to the member, elongated members rotatably mounted in the frame and carried by said member, bead ring engaging projections extending laterally from the elongated members, means for rotating the elongated members whereby the lugs thereonmay be adjusted to a variety of positions so as to facilitate the insertion and removal of the elongated members into and from bead rings, and supporting means for said portable member and frame having provision for causing relative movement therebetween.

Signed at Akron, county of Summit, State of Ohio, this 6th day of May, 1929.

FLORIAN J. SI-IOOK.

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